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arXiv · 1709.07477

On the observable spectrum of theories with a Brout-Englert-Higgs effect

Axel Maas·René Sondenheimer·Pascal Törek
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Abstract

The physical, observable spectrum in gauge theories is made up from gauge-invariant states. The Fröhlich-Morchio-Strocchi mechanism allows in the standard model to map these states to the gauge-dependent elementary $W$, $Z$ and Higgs states. This is no longer necessarily the case in theories with a more general gauge group and Higgs sector. We classify and predict the physical spectrum for a wide range of such theories, with special emphasis on GUT-like cases, and show that discrepancies between the spectrum of elementary fields and physical particles frequently arise.

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Axel Maas, René Sondenheimer, Pascal Törek. 2019-02-13. On the observable spectrum of theories with a Brout-Englert-Higgs effect. https://doi.org/10.1016/j.aop.2019.01.010

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